1322221155487 has 2 divisors, whose sum is σ = 1322221155488. Its totient is φ = 1322221155486.

The previous prime is 1322221155403. The next prime is 1322221155499. The reversal of 1322221155487 is 7845511222231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1322221155487 - 2¹¹ = 1322221153439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1322221159487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661110577743 + 661110577744.

It is an arithmetic number, because the mean of its divisors is an integer number (661110577744).

Almost surely, 2^{1322221155487} is an apocalyptic number.

1322221155487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322221155487 is an equidigital number, since it uses as much as digits as its factorization.

1322221155487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 268800, while the sum is 43.

The spelling of 1322221155487 in words is "one trillion, three hundred twenty-two billion, two hundred twenty-one million, one hundred fifty-five thousand, four hundred eighty-seven".